Massachusetts. Executive Office of Public Safety and Security. Research and Policy Analysis Division.(Commonwealth of Massachusetts, Executive Office of Public Safety and Security, Research and Policy Analysis Division., 2007-10)

Massachusetts. Executive Office of Public Safety and Security. Research and Policy Analysis Division.(Commonwealth of Massachusetts, Executive Office of Public Safety and Security, Research and Policy Analysis Division., 2010-08)

Massachusetts. Executive Office of Public Safety and Security. Research and Policy Analysis Division.(Commonwealth of Massachusetts, Executive Office of Public Safety and Security, Research and Policy Analysis Division., 2009-05)

Massachusetts. Executive Office of Public Safety and Security. Research and Policy Analysis Division.(Commonwealth of Massachusetts, Executive Office of Public Safety and Security, Research and Policy Analysis Division., 2012-04)

Massachusetts. Executive Office of Public Safety and Security. Research and Policy Analysis Division.(Commonwealth of Massachusetts, Executive Office of Public Safety and Security, Research and Policy Analysis Division, 2014-12)